Base portion of the wheelchair frame



FIG. 1 is a top perspective view of a base portion of the wheelchairframe showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side elevationalview being a mirror image of that shown;

FIG. 5 is a top plan view; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a base portion of the wheelchair frame, asshown and described.